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The best alternatives to 6561 are Afino Puzzles 1.0, VC Puzzle, and Ordinary Puzzles.
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Best alternatives to 6561
  • Start your day off with a challenge or just have fun with your team using Afino's Puzzle Slack app. Add your team, choose your frequency, see how you stack up against others, and have fun :).
  • Shrug and Party Round have teamed up to create VC Puzzle, a limited-edition, Monopoly-inspired 500-piece puzzle, showcasing 69 Venture Capital firms. Each puzzle will be available for $0.99 and each firm will be commemorated with corresponding NFTs.
  • Ordinary Puzzles is a web, iOS, and Android mobile puzzle game inspired by Picross and Sudoku. Each puzzle has a single solution and can be solved through logical deduction alone: no trial and error needed. Ordinary Puzzles is free and open-source.